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MCI - ONT

$70 Find cheap flights from Kansas City to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Kansas City to Ontario departing on 6/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
sáb. 6/29
sáb. 7/6

Search hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Kansas City to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Kansas City to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

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Cheap flight deals from Kansas City to Ontario (MCI-ONT)

 
These are the cheapest deals for flights from Kansas City to Ontario currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Kansas City to Ontario

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Kansas City to Ontario.

Recent one-way flight deals from Kansas City to Ontario

Only flying one-way? Below are some of the best one-way flight deals from Kansas City to Ontario found on KAYAK recently.

Recent last minute flight deals from Kansas City to Ontario

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Kansas City to Ontario.

Recent direct flight deals from Kansas City to Ontario

The latest deals for direct flights from Kansas City to Ontario so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Kansas City to Ontario

Find recent round-trip train or bus tickets from Kansas City to Ontario.

All round-trip flight deals to Ontario

The cheapest plane tickets to Ontario found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:44 pm - 11:59 pmMCI-ONT
6h 15m1 stop
12:49 am - 8:15 amONT-MCI
5h 26m1 stop
$140Frontier
Find Deal
mar., jun. 11 - mié., jun. 12
8:41 am - 11:57 pmMCI-ONT
17h 16m1 stop
12:59 am - 7:16 pmONT-MCI
16h 17m1 stop
$142Frontier
Find Deal
sáb., jun. 8 - mar., jun. 11
5:50 am - 12:17 pmMCI-ONT
8h 27m1 stop
5:00 pm - 12:30 amONT-MCI
5h 30m1 stop
$267Delta
Find Deal
dom., jun. 16 - mié., jun. 19
6:00 am - 11:03 amMCI-ONT
7h 03m1 stop
1:40 pm - 12:29 amONT-MCI
8h 49m1 stop
$271United Airlines
Find Deal
jue., jun. 27 - jue., jul. 4
5:50 am - 12:17 pmMCI-ONT
8h 27m1 stop
5:00 pm - 12:32 amONT-MCI
5h 32m1 stop
$276Delta
Find Deal
vie., jun. 28 - mié., jul. 3
5:57 pm - 10:09 pmMCI-ONT
6h 12m1 stop
4:31 pm - 11:44 pmONT-MCI
5h 13m1 stop
$296American Airlines
Find Deal
lun., jul. 1 - jue., jul. 4
6:00 am - 12:45 pmMCI-ONT
8h 45m1 stop
1:55 pm - 12:35 amONT-MCI
8h 40m1 stop
$351United Airlines
Find Deal
jue., jun. 20 - mar., jun. 25
4:16 pm - 10:40 pmMCI-ONT
8h 24m1 stop
7:00 am - 11:59 pmONT-MCI
14h 59m2 stops
$399Alaska Airlines
Find Deal
jue., ago. 15 - lun., ago. 26
4:23 pm - 9:40 pmMCI-ONT
7h 17m2 stops
4:31 pm - 11:44 pmONT-MCI
5h 13m1 stop
$406American Airlines
Find Deal
lun., jul. 1 - jue., jul. 4
4:16 pm - 11:59 pmMCI-ONT
9h 43m2 stops
6:00 am - 11:59 pmONT-MCI
15h 59m1 stop
$617Alaska Airlines
Find Deal
jue., jul. 4 - lun., jul. 8
7:44 pm - 11:44 pmMCI-ONT
6h 00m1 stop
$70Frontier
Find Deal
jue., jun. 6
1:26 pm - 7:27 amMCI-ONT
20h 01m1 stop
$81Frontier
Find Deal
lun., jun. 10
7:44 pm - 11:59 pmMCI-ONT
6h 15m1 stop
$100Frontier
Find Deal
mar., jun. 18
5:50 am - 12:17 pmMCI-ONT
8h 27m1 stop
$128Delta
Find Deal
vie., jun. 28
5:50 am - 12:17 pmMCI-ONT
8h 27m1 stop
$139Delta
Find Deal
dom., jun. 16
9:41 am - 10:45 pmMCI-ONT
15h 04m2 stops
$261United Airlines
Find Deal
vie., ago. 16
6:00 am - 7:31 pmMCI-ONT
15h 31m2 stops
$288Alaska Airlines
Find Deal
sáb., jun. 22
9:41 am - 10:27 pmMCI-ONT
14h 46m2 stops
$289United Airlines
Find Deal
mar., jun. 11
12:07 pm - 9:40 pmMCI-ONT
11h 33m2 stops
$334American Airlines
Find Deal
mar., jul. 2
11:29 am - 6:59 pmMCI-ONT
9h 30m1 stop
$352American Airlines
Find Deal
lun., jun. 3
7:44 pm - 11:59 pmMCI-ONT
6h 15m1 stop
8:03 am - 7:16 pmONT-MCI
9h 13m1 stop
$298Frontier
Find Deal
mar., jun. 4 - mié., jun. 5
7:44 pm - 11:59 pmMCI-ONT
6h 15m1 stop
11:59 am - 8:15 amONT-MCI
18h 16m1 stop
$305Frontier
Find Deal
mar., jun. 4 - jue., jun. 6
7:44 pm - 11:59 pmMCI-ONT
6h 15m1 stop
10:23 pm - 7:41 amONT-MCI
7h 18m1 stop
$344Frontier
Find Deal
vie., may. 31 - vie., jun. 28
7:44 pm - 11:59 pmMCI-ONT
6h 15m1 stop
10:23 pm - 7:41 amONT-MCI
7h 18m1 stop
$358Frontier
Find Deal
vie., may. 31 - vie., jun. 7
9:41 am - 12:33 pmMCI-ONT
4h 52m1 stop
5:15 am - 8:34 pmONT-MCI
13h 19m1 stop
$610United Airlines
Find Deal
sáb., jun. 1 - sáb., jun. 8
6:00 am - 12:45 pmMCI-ONT
8h 45m1 stop
1:55 pm - 12:35 amONT-MCI
8h 40m1 stop
$612United Airlines
Find Deal
lun., jun. 3 - lun., jun. 10
3:52 pm - 10:29 pmMCI-ONT
8h 37m2 stops
10:29 pm - 10:22 amONT-MCI
9h 53m1 stop
$710American Airlines
Find Deal
vie., may. 31 - lun., jun. 3
3:52 pm - 10:29 pmMCI-ONT
8h 37m2 stops
12:53 pm - 10:47 pmONT-MCI
7h 54m2 stops
$716American Airlines
Find Deal
vie., may. 31 - lun., jun. 3
7:00 am - 3:26 pmMCI-ONT
10h 26m1 stop
10:00 am - 7:04 pmONT-MCI
7h 04m1 stop
$977Alaska Airlines
Find Deal
vie., may. 31 - mar., jun. 4
3:09 pm - 11:58 pmMCI-ONT
10h 49m1 stop
10:00 am - 7:04 pmONT-MCI
7h 04m1 stop
$999Alaska Airlines
Find Deal
vie., may. 31 - dom., jun. 2

Flights from Kansas City to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from Kansas City to Ontario to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Kansas City to Ontario?

The average price of all flights from Kansas City to Ontario clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to Ontario on a Tuesday and more expensive on a Saturday. On your return trip to Kansas City, you should consider flying back on a Friday, and avoid Mondays for better deals.

Which airlines provide the cheapest flights from Kansas City to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Frontier offered the best one-way deal for that route, at $70. KAYAK users also found Kansas City to Ontario round-trip flights on Frontier from $140 and on Delta from $267.

Good to know

Low season

February

High season

June

Cheapest flight

$70
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Kansas City to Ontario

When to book flights from Kansas City to Ontario

Are your dates flexible? Find out the best times to travel from Kansas City to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Kansas City to Ontario

  • What is the cheapest flight from Kansas City to Ontario?

    In the last 3 days, the lowest price for a flight from Kansas City to Ontario was $70 for a one-way ticket and $140 for a round-trip.

  • Do I need a passport to fly between Kansas City and Ontario?

    A passport is not required to fly from Kansas City to Ontario.

  • Which airports will I be using when flying from Kansas City to Ontario?

    Kansas City and Ontario are both served by 1 main airport. You will leave Kansas City from Kansas City and will be arriving at Ontario.

  • Which aircraft models fly most regularly from Kansas City to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Kansas City to Ontario?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Kansas City and Ontario, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Kansas City to Ontario, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Kansas City to Ontario are Delta and United Airlines. With an average price for the route of $342 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $539 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Kansas City to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Kansas City to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Kansas City to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Kansas City is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Kansas City to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Kansas City with another airline. Booking your flights between Kansas City and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Kansas City to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Kansas City up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Kansas City to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Kansas City to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Kansas City to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10457 reviews
7.9Comfort
8.6Crew
7.4Food
8.0Entertainment
8.2Boarding
Airline reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

8.0 ExcellentLiam, May 2024SLC - SJC
Read more about Delta reviews

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

A regional sized plane was used for a cross country flight with no overhead bin space. I had to "pink check" my laptop and my medications. I was NOT pleased!!!!

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

There were delays on both ends. It made it less than excellent. This plane was great though

Everything was great except for the wifi was junk. Crew was super friendly and helpful

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

They stuck us with multiple extra fees. I will never fly spirit again

The guy with severe body odor sat next to me. For the whole duration of the flight it was a torture. The airline should have better policy on limiting people with bad body odor to board the flight. Passengers should not be the ones to endure bad odor for the whole duration of the flight. The airline should be e the one to ensure decent air quality for ever passenger.

They charged me 212.00 for a heavy check in bag at the gate. The pricing and process was so confusing - as if it was designed to purposefully gouge customers who need to board plane. That experience combined with the outrageous price charged will prevent me from ever flying Spirit again. And I’ll be sure to tell the story to anyone who cares to hear.

The text told me it was changed to Terminal E and Gate D5. But with no one on site to ask questions there was confusion on where to go as all the gates were E's. Then we took the skyline to the D area. We left to get something to eat. No announcement was made but my daughter happened to asked and they told her our gate was moved to D12. I will not fly Spirit again.

The agent at the check in desk was absolutely rude. The rest of the team after that was good, but the check in process at LAS was miserable. The woman at the desk spoke like we were stupid and was rude throughout the process.

Its so random that they only allow 40 pounds on checked bags when all airlines take 55. They then charge you for each 10 extra pounds, so my checked suitcase was $130 and the flight $30 ... its like whattt, im for sure not traveling with Spirit again

So bad. The check in process was laborious and the check in agent didn't seem to know how to manage the process efficiently and was confused about how to check in my son's sports equipment. The baggage fees were outrageous and so expensive. $90 for a carry on bag? And $200 additional for 2 check ins. The security lines were insanely long and the terminal was not very nice in the Spirit area. $5 for a water on board. It was my first and last time flying Spirit - I tried to save $ by flying them due to the accommodating schedule but I should have paid for Southwest, because it would've actually ended up less expensive due to the free bags with Southwest. There were no charging ports on the airplane, no wifi and really uncomfortable seating. The flight crew were great though, courteous and efficient in their boarding. Flight was delayed 1 hour, but we made up 15 minutes in flight.

My experience was better than expected. What I did find not so great was the seats. Very little room, they did not recline and the tray table was the size of a post card. There was no food to try, just standard snacks that you had to pay for and I don’t know of any entertainment. I would fly again even though everything was an upcharge. Flight was on time with little disturbance

thy don't even ofer water we have to buy it for $4.49 and paid for our cary on bags $100 each we never will fly in this company again.

Super cool and laid back, three lovely ladies. Couldn’t ask for better service.

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

The boarding time. I was in Section 1 the lady in charge just let people in section 3 without see us. Make a line , I have to step out and ask her. We were in the line and she just take my ticket and that’s it, so if I don’t ask her she could leave us at the end! We paid more for that privilege and. She doesn’t care….

Book cheap flights from Kansas City to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Kansas City to Ontario found on KAYAK in the last 72 hours.
6/6jue.
1 stopFrontier
6h 00mMCI-ONT
$70
6/10lun.
1 stopFrontier
20h 01mMCI-ONT
$81
6/18mar.
1 stopFrontier
6h 15mMCI-ONT
$100
6/28vie.
1 stopDelta
8h 27mMCI-ONT
$128
6/16dom.
1 stopDelta
8h 27mMCI-ONT
$139
8/16vie.
2 stopsUnited Airlines
15h 04mMCI-ONT
$261
6/22sáb.
2 stopsAlaska Airlines
15h 31mMCI-ONT
$288
6/11mar.
2 stopsUnited Airlines
14h 46mMCI-ONT
$289
7/2mar.
2 stopsAmerican Airlines
11h 33mMCI-ONT
$334
6/3lun.
1 stopAmerican Airlines
9h 30mMCI-ONT
$352

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Last minute flights from Kansas City to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Kansas City to Ontario that are departing in the next 10 days.
6/4mar.
multi-stopFrontier
6h 15mMCI-ONT
6/5mié.
multi-stopFrontier
9h 13mONT-MCI
$298
6/4mar.
multi-stopFrontier
6h 15mMCI-ONT
6/6jue.
multi-stopFrontier
18h 16mONT-MCI
$305
5/31vie.
multi-stopFrontier
6h 15mMCI-ONT
6/28vie.
multi-stopFrontier
7h 18mONT-MCI
$344
5/31vie.
multi-stopFrontier
6h 15mMCI-ONT
6/7vie.
multi-stopFrontier
7h 18mONT-MCI
$358
6/1sáb.
multi-stopUnited Airlines
4h 52mMCI-ONT
6/8sáb.
multi-stopUnited Airlines
13h 19mONT-MCI
$610
6/3lun.
multi-stopUnited Airlines
8h 45mMCI-ONT
6/10lun.
multi-stopUnited Airlines
8h 40mONT-MCI
$612
5/31vie.
multi-stopAmerican Airlines
8h 37mMCI-ONT
6/3lun.
multi-stopAmerican Airlines
9h 53mONT-MCI
$710
5/31vie.
multi-stopAmerican Airlines
8h 37mMCI-ONT
6/3lun.
multi-stopAmerican Airlines
7h 54mONT-MCI
$716
5/31vie.
multi-stopAlaska Airlines
10h 26mMCI-ONT
6/4mar.
multi-stopAlaska Airlines
7h 04mONT-MCI
$977
5/31vie.
multi-stopAlaska Airlines
10h 49mMCI-ONT
6/2dom.
multi-stopAlaska Airlines
7h 04mONT-MCI
$999

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Kansas City - Ontario Flights

Departure:

Kansas City (MCI)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Kansas City

Cabin classes: